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huybinhs
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Homework Statement
A styrofoam cooler (k = 0.030 W/(m·°C) has outside dimensions of 0.190 m × 0.210 m × 0.340 m, and an average thickness of 2.2 cm. How long will it take for 3.60 kg of ice at 0°C to melt in the cooler if the outside temperature is 26.0°C?
Homework Equations
Delta Q / Delta t = [k A (T1-T2)] / l
The Attempt at a Solution
Delta Q = m L = 3.60 * 3.33*10^5 = 119880 cal.
=> Delta t = [Delta Q * l] / [k*A (T1 - T2)]
Delta t = 119880 *2.2*0.01 / 0.030*0.190*0.210*0.340*26 = 692.34 h which is wrong.
Please advise! Thanks!